Without delay, let's solve this. We've got 662 and we will be multiplying it by 109, that is, adding 662 to itself 109 times.
Step 1: 0 + 662 = 662
Step 2: 662 + 662 = 1324
Step 3: 1324 + 662 = 1986
Step 4: 1986 + 662 = 2648
Step 5: 2648 + 662 = 3310
Step 6: 3310 + 662 = 3972
Step 7: 3972 + 662 = 4634
Step 8: 4634 + 662 = 5296
Step 9: 5296 + 662 = 5958
Step 10: 5958 + 662 = 6620
Step 11: 6620 + 662 = 7282
Step 12: 7282 + 662 = 7944
Step 13: 7944 + 662 = 8606
Step 14: 8606 + 662 = 9268
Step 15: 9268 + 662 = 9930
Step 16: 9930 + 662 = 10592
Step 17: 10592 + 662 = 11254
Step 18: 11254 + 662 = 11916
Step 19: 11916 + 662 = 12578
Step 20: 12578 + 662 = 13240
Step 21: 13240 + 662 = 13902
Step 22: 13902 + 662 = 14564
Step 23: 14564 + 662 = 15226
Step 24: 15226 + 662 = 15888
Step 25: 15888 + 662 = 16550
Step 26: 16550 + 662 = 17212
Step 27: 17212 + 662 = 17874
Step 28: 17874 + 662 = 18536
Step 29: 18536 + 662 = 19198
Step 30: 19198 + 662 = 19860
Step 31: 19860 + 662 = 20522
Step 32: 20522 + 662 = 21184
Step 33: 21184 + 662 = 21846
Step 34: 21846 + 662 = 22508
Step 35: 22508 + 662 = 23170
Step 36: 23170 + 662 = 23832
Step 37: 23832 + 662 = 24494
Step 38: 24494 + 662 = 25156
Step 39: 25156 + 662 = 25818
Step 40: 25818 + 662 = 26480
Step 41: 26480 + 662 = 27142
Step 42: 27142 + 662 = 27804
Step 43: 27804 + 662 = 28466
Step 44: 28466 + 662 = 29128
Step 45: 29128 + 662 = 29790
Step 46: 29790 + 662 = 30452
Step 47: 30452 + 662 = 31114
Step 48: 31114 + 662 = 31776
Step 49: 31776 + 662 = 32438
Step 50: 32438 + 662 = 33100
Step 51: 33100 + 662 = 33762
Step 52: 33762 + 662 = 34424
Step 53: 34424 + 662 = 35086
Step 54: 35086 + 662 = 35748
Step 55: 35748 + 662 = 36410
Step 56: 36410 + 662 = 37072
Step 57: 37072 + 662 = 37734
Step 58: 37734 + 662 = 38396
Step 59: 38396 + 662 = 39058
Step 60: 39058 + 662 = 39720
Step 61: 39720 + 662 = 40382
Step 62: 40382 + 662 = 41044
Step 63: 41044 + 662 = 41706
Step 64: 41706 + 662 = 42368
Step 65: 42368 + 662 = 43030
Step 66: 43030 + 662 = 43692
Step 67: 43692 + 662 = 44354
Step 68: 44354 + 662 = 45016
Step 69: 45016 + 662 = 45678
Step 70: 45678 + 662 = 46340
Step 71: 46340 + 662 = 47002
Step 72: 47002 + 662 = 47664
Step 73: 47664 + 662 = 48326
Step 74: 48326 + 662 = 48988
Step 75: 48988 + 662 = 49650
Step 76: 49650 + 662 = 50312
Step 77: 50312 + 662 = 50974
Step 78: 50974 + 662 = 51636
Step 79: 51636 + 662 = 52298
Step 80: 52298 + 662 = 52960
Step 81: 52960 + 662 = 53622
Step 82: 53622 + 662 = 54284
Step 83: 54284 + 662 = 54946
Step 84: 54946 + 662 = 55608
Step 85: 55608 + 662 = 56270
Step 86: 56270 + 662 = 56932
Step 87: 56932 + 662 = 57594
Step 88: 57594 + 662 = 58256
Step 89: 58256 + 662 = 58918
Step 90: 58918 + 662 = 59580
Step 91: 59580 + 662 = 60242
Step 92: 60242 + 662 = 60904
Step 93: 60904 + 662 = 61566
Step 94: 61566 + 662 = 62228
Step 95: 62228 + 662 = 62890
Step 96: 62890 + 662 = 63552
Step 97: 63552 + 662 = 64214
Step 98: 64214 + 662 = 64876
Step 99: 64876 + 662 = 65538
Step 100: 65538 + 662 = 66200
Step 101: 66200 + 662 = 66862
Step 102: 66862 + 662 = 67524
Step 103: 67524 + 662 = 68186
Step 104: 68186 + 662 = 68848
Step 105: 68848 + 662 = 69510
Step 106: 69510 + 662 = 70172
Step 107: 70172 + 662 = 70834
Step 108: 70834 + 662 = 71496
Step 109: 71496 + 662 = 72158

So, 662*109 = 72158